ams511
Contributor
True, and you might already have a watch. But if not you're looking at spending ~$100 no matter what, actual cost of a DC is what you pay on top of that.
I look at things a bit differently. One way of saving money on scuba is to purchase your second set of gear first. The OP knows he wants a Petrel 2, but cannot afford it at the present time. If he purchases a $250 computer and later resells it for $100, he loses $150. If he buys a depth gauge for $50 and resells it for $25, he loses $25. Of course, the losses depend on the difference between the purchase and sales price but you can see what I mean. My point of view is to minimize the loss before he purchases the Petrel.